Fluid supply hose and reel means



Feb.'27, 1940- "r. E. PuRcELL ETAL- vl 2,191,728

. FLUID SUPPLY HOSE AND REEL mus Original Filed se t. 17, 1935 3Sheets-Sheet 1 Feb. 27, 1940. T.E. PURCELL El AL 2,191,728

FLUID SUPPLY HOSE AND REEL MEANS Original Filed Sept. 1'7, 1935 3Sheets-Sheet 2 jimzora momaaifarc eZZ, Ira/Z C/Za'rc/Z.

Feb. 27, 1940.

1'. E. PURCELL ETAL 2,191,728 FLUID SUPPLY HOSE AND REEL MEANS OriginalFiled Sept. 17, 1935 S'Sheets-Sheet 3 Patented Feb. 27, 1940UNITEDQSTATES v 2,191,12's FLUID SUPPLY Hose ANDREEL lVlEANS ,7 Thomas'E. Purcell, Mount Lebanon, and IraE'."

I Church, Bethel Township,

Allegheny County,

Original application September 17, 1935, Serial Divided and thisapplication February 14', 1938, Serial Ned-90,470

3Ql aims. (c1; gas-73y Thisinvention relatesto the coating of tubes andanalogous articles with liquids, such as corrosion resting paints, andhas to'do'with improved means for supplying the coating material to thetubes.

Our invention is directed to the application to a tube of a coatingmaterial in a coat of predetermined uniform thickness effective toprotect the tube.

' means whereby'the coating material is supplied to the surfaceof thetube to be coated at a predetermined uniform rate and is spread'uniforml'y upon the tube surfaces at a uniform rate so re-- lated to therateof supply of: the material as to assure distribution of the latterupon the tube surface in a continuous coating of uniform pre-'determined thickness. vide simple, efficient,

A further object isto proand comparatively inexpensive means of thecharacter stated. Further objects and advantages of our invention willappear from the detaildescription.

In the drawingsy f 3 Figure 1 is a plan view of a machine embodying ourinvention, this view also showing .a boiler tube fragment'arily andvinsection being coated by our machine, parts of the machine being brokenaway and shown in section; 1 r l I I Figure 2. is a side view of themachine, parts being omitted for clearnessf'of illustration; Figure 3 isafront view ofithe machine, parts being omitted for clearness ofillustration;

Figure 4 is a side VleW Of the machine, taken from theoside opposite tothat of Figure2,- parts I being broken away and omitted for clearness'of illustration;

Figure 5 is a fragmentarysectional view taken substantially on line 5-5of Figure 1, parts being omitted for clearness of illustration, on anenlarged scale.

This application is a division of our copending I application for, Tubecoating -means, Serial No. 45,250, filed October 16, 1935, patented onMarch 28, 1938, Patent No. 2,112,212.

I The machine of our inventioncomprises a suit 5 ably braced angle ironframe lin which is ro- 2 comprising a central.

ta ,tablymounted a reel shaft imounted at each endin ballbearingsllcarried-by a collar 5 suitably supported in the frame. A constant speedtype is suitably mounted in; the lower portion of; frame I and hasdriving connection, by means of a flexible coupling 1 of known type, toagear re-.- duction unit8, also of known type, mountedin the A sprocketwheel 9.15

lower portion of the frame.

Ano'bject'of our invention is to provide 23-- secured upon 'shaft24rotatably mounted in a U-shaped brack- 4 electric motor Gyof looselymounted upon shafthlfl, which projects outward from unit 8, thissprocket wheel being disposed adjacent a friction clutch member ll se-'cured upon shaft l0,-it being understood that sprocket 9 "is providedwith a clutch member 5 which cooperateswith member II, the two fric-'-'tion members of the-clutch being yieldingly urged out of contact witheach other. Friction clutches of this type are. known and need notbefurther illustrated'nor describedhere. A clutch forkv I2 10 ofapproximately inverted U-shape extends'over the clutch member I l andhas its inner arm provided, atzthe lower end. thereof, with fingersdisp'osedat opposite sides of shaft l0 and contacting the sprocket 9 atthe inner sidetthereofu The '15 outer armof fork lZis provided, at itslower end, with a .socketin which is-zsecuredthe upper end of'a' leverl3.- suitably mounted for rocking'movementon the outer end of shaft [0.A pull rod Ht haslitsouter end suitably attached to thelower 20 endi oflever 13 andis connected at its inner end, through themedium of ayielding connection 15 o'f known-type, to the. forward end of one arm ofahbell crank. lever 16 pivotally cmolunted' in a bracket 11 securedtothe frame I. The other 25 armtof lever i6 is suitably'connected, at l8,to

movable core IQ of an electromagnet 20 suitablymounted upon frame I. isenergized, yoke I2 is moved in proper direction to'forc'ezthe sprocketwheel 9-toward the left, as 30 viewed, inFigure 3, thus clutching thesprocket wheel to shaft lil', through the medium of the friction clutch,so as to rotate therewith, and

when the electromagnet .2ll is deenergized yoke '12- is .released. andthe sprocket wheel is de- 35 clutched from the shaft. r

, Ausprocket chain 21- trained about sprocket wheel 9' and passes over asprocket wheel 22 se-' cured-upon shaft; 3;adjacent thelefthand end of Ireel 2, as viewed in Figure 3, this chain passing 40 forward anddownward about a sprocket wheel the lefthand end of, a screw.

et Z5 'suitably secured to, and extending forward from the upper portionof frame I. -Shaft,'.24

threads through a block-J6 provided in its for-" wardface with aguideway which receives the bightportion of bracket 25. ,A rectangularguide element 21 projects upward fromblock 26 and serves to guide aflexible hose 28 passing through e; e. el ent;

I ing winding" of the hose onto andoff of the reel 2.- During rotationoflth'e reel, screw v shaft 24- will also be rotated and acts to feedthe guide member lengthwise of thefreel atarate commensuratewith therotation thereof 55 I hen the electromagnet.

the

The righthand end'portion of shaft 3 is ot tubular construction or, ifdesired,this shaft may be of tubular construction throughout its lengthand many be provided, adjacent its righthand end, with a suitable plugorclosure member. A plate 36 is suitablysecured to frame I, as by meansof shouldered bolts 3| and associated nuts, and carries a sleeve 32which extends into the righthand end of shaft 3, this sleeve being openat its inner end, as shown in Figure 5. A pack-t ing nut 33 is screwedupon the end of shaft 3 and serves to compress between the endof thisshaft and about sleeve 32 suitable packing material, thus providing astufiing box at the end of shaft 3xand about sleeve 32effective toprevent leakage of air from the end of the shaft while permittingrotation thereof in the rotation of the reel. A packing gland 35 isscrewed into the outer end of sleeve32 and serves as a closure therefor.A tube 36 passes through the inner end of packing gland 35 and extendsoutward therefrom through a sleeve 31 projecting from axial with shaft3.

v A tube 45 is welded at-its inner end, at 46,-to

30. upon'it's upper end a cylindrical head 48 which the circumferentialwall of the reel, which head. screws upon the outer end of tube 45 andis northe inner side of the plate 38 adjustably secured by bolts 39 andassociated nuts, to plate. .30, Plate 38 is also provided, at its outerside, with a short sleeve 46 disposed coaxial with and forming' acontinuation of sleeve 37, 'the outer portion ofsleeve 40 extendingintothe inner end of a flanged head 4! adjustably secured bybolts 39 andassociated nuts to plate 38. Tube 36 extends through sleeves .37 and 40and projects into a reduced bore 42 formed in. the outer portion ofhead-4i coaxial therewith. Head 4| is further provided, adjacent itsouter end, with a duct 43 extending radially of the head from bore- 42.Suitablep'acking material'is confined between the inner end of sleeve 31and the, inner, end of gland 35, material is also confined within head4| about tube 36 and between sleeve 46"and the inner end of therecess'in head .Mwhich accommodatesthis sleeve. stuflln'g boxes aboutthe tube 36 efiective to form fluid tight closures about this tube whilepermitting rotation thereof in the rotation of the reel, it being notedthat tube 36 is disposed-coshaft 3 about an opening 41 in thisshaft.Tube extends radially from shaft 3 and receives fits snuglythrough a corresponding opening in mally closed, at its outer end, by ascrew plug '49. A tube 50 is disposed in tube coaxially therewith and'isconnected, at its inner end, to the inner end'of tube 36 by means of asuitable fitting '5|'.' '.A-head 52, disposed within-head48,-screws uponthe outer end of tube and is normally closed at its outer end by a screwplug 53'. A

nipple 54projects radially fromhead 48 and a similar nipple (not shown)projects from head 52" }witl 1inand concentric with nipple 54. This provides means whereby air, under pressuramaybe upplied to'head '48,through sleeve 32; the 'tubu nected by a about tube 36, and suitablepacking In this manner, we provide suitable lar end portion of shaft 3under pressure may be supplied to head 52 through tube 56, fitting 5|,and tube 36.'

An air supply line 55, conveniently a suitable length of flexible hose,is connected at one end to the lower end of an air pipe 56 disposedadjacent the righthand end of the machine, as viewed in Figure 1. An airgauge 51 is connected to the the upper end of pipe 66, and this pipe isconnipple 58 to a Valve casing 59 connected by a nipple 66 to sleeve 32outwardly :beyond the packing nut 33. The valve casing 59 accommodatesthe valve element of an electromagneti'cally operated valve indicated inits entirety by reference number 6|, this valve being of known type andnormally closed. The other endof airline is connected to the outlet ofan air cleaner 62 of known type, the inlet of l which is connected by avalved connection 63 to l 6 and tube 45, and liquid other end of whichconduit is connected to a valvedconnection '67 attached to one end ofthe head of a .T fitting 68 the stem of which is secured inand opensthrough the top of a closed tank 69. "An air pressure regulator 16, ofknown type, is connected to the other end of the head i of the T fitting68 and may be adjusted for maintaining a constant predetermined pressurewithin the tank 69. The tank 69 is further provided with an air pressuregauge H, ofknown type, and with an agitator l2 operated by an air motor13 which may receive air under pressure from thetank, the agitator andthe air motor being of any suitable or preferred-known type. The tank 66is intended to contain a coating liquid.

A paint! or liquid supply line 15, conveniently in theformof a suitablelength of flexible hose, isattachecl at one end, by means of a valvedfita suitable quantity of ting 16, to the upper end of :a. tube Tl,which is secured through the top of tank 69 and extends downward within'the'latter an appropriate distance for supplying the coating liquid orpaint within'tank 69 to the line under predetermined uniform pressure.The other end of line 75 is connected to the lower end of a verticalpipe 18,- the upper end of-which is connected to' one end of a'valvecasing 79, the other end of which is connected by a nipple86 to a.T 8|at one end-of the head thereof. The otheri end of head of T 8i hassecured therein one end "of a'.

an electromagnetic valve 83 of known=-type,lth e valve element of whichis normally in closed p"0si'- tion.*"An outlet box 85 is mounted uponframe l adjacent pipe 18 and is connected by conduits" 86 and 8'ltotheelectromagnetic ya1ve6l "and 83,

respectively. The outlet box 85 .carries a socket member 88 of knowntype adapted for reception of the -pron'gsof a plugcap; also'of known'.-type, which is connectedto 'one end of amultiple con: trol'ci'rcuitpable to be-hereinafter"referred to.

air under pressure may into socket member so I uprights Ia of frame Asecond outlet box 89 is disposed below box 88 and connected thereto by anipple 90. Outlet box 89 is provided with a socket member 9I adapted forreception'of the prongsof a plug cap connected to one end of a cord orcable of an extensionlight. 130 89 is also provided with a socket member92 adapted for reception of the prongs of a plug cap connected to oneend of an'electric cord-or cable which is connected to a suitable sourceof electrical energy. A manually operated cut-out switch 93, of knowntype, is disposed below the outlet box 89 and isconnected thereto by anipple 94, this switch providing means for manually controllingv thecircuit "of motor 6. It Will be understood that electrical conductors orwires, suitably insulated, pass throughthe conduits 86 and 81 and thenipples and 94; and that suitable connections are made to providecircuits for controlling the valves 6| and 83 and the clutch by means ofthe electromagnet 20.

A reel 95 is rotatably mounted upon a plate 95 of rectangularcross-section suitably secured to frame I at the other end thereof, thatis, at the lefthand end of the frame as viewed inFigure 1. Reel'95lreceives a flexible electric cord or cable 91 which is windable onto andoff of the reel, the latter being of known type and, if desired, havingassociated therewith spring or equivalent means, also of known type, forrotating the reel and winding the cable thereon as desired; Cable 91 isprovided, at one end, with a multiple pronged plug cap adapted forinsertion 88 of outlet box 85 for properly connecting the cable to thecontrol circuits for operating the valves tI and83and the clutch, thelatter being actuated in accordance with energizing and deenergizing ofthe electromagnet 20. Itwill be understood that the reel 95 is ofappropriate structure and has associated therewith suitable means forpermitting rotation of the reel in the winding and unwinding of cable 91without interfering with the connection between the cable and socketmember 88. Reels of this type, and having means of thecharacter referredto associated therewith, are known in the art and need not be shown nordescribed in detail, it sufflcing to note that the reel 95 andassociated parts and the cable 91 are of suitable type and areassociated in such manner as to accomplish the desired results. I I i Aswitch block I00, of known type, is connected to the other end of cable91 and carries three switches IOI, I02 and I03, also of known type,

these switches preferably being snap switches. I

Switch IOI may control the circuit of the electromagnetic valve BI,switch I02 may control the circuit. of. electromagnetic valve 83,- andswitch I03 may controlthe circuit of electromagnet 20. By operating theswitches in the order named, be admitted to tube 45, coating liquid orpaint under predetermined uniformpressure may be admitted to tube 50,and electromagnet 20 may then be energized for rotating the reel 2.

Frame I, in side view, is of generally triangular shape. A rod I05extends transversely of the frame, at the front thereof, this rod beingsuit ably secured in brackets I06 welded or otherwise suitably securedto the side members of frame I. A similar-rod I01 is secured by U-boltsI08 to I at the rear thereof. Rods and I01 are disposed in parallelrelation and project beyond the sides of the frame, providing handlesfor transporting the machine The upper end portion of each upright Id ofthe frame I is turned rearward and downward to provide a U- shapedbracket lb in which-is rotatably mounted a grooved roller H0. Therollers I-I0 are intended to fit upon a cylindrical rail III supportedin a suitable manner, for supporting the machine in desired position.

An air hose H2 is attached at one end, by a coupling H3 of known type,to nipple 5 extending from head 48 on the outer end of tube 45. Aflexible paint or liquid supply hose H3, of small exterior diameterrelative to the interior diameter of hose H2, is disposed in the latterhose and is suitably secured at one end to the nipple extending fromhead 52 within nipple 5.4. The other end of air hose H2 is connected, bya coupling H4 of known type, to one end of a tubular connecting memberH5 about which extends a reenforcing coil IIB secured at one end to thefemale member of the coupling H4 and, at its other end, to a couplinghead H1 secured to the other end of tubular member H5. Head H1 screwsinto one end of easing H3 of an air turbine H9 of known type. Thisturbine includes a rotor I20 provided with a tubular hub I2I. This hubprojects beyond one end of the rotor into a cup-shaped element I22 ofair inlet member I23, the latter being provided with suitably disposedair inlet passages to the rotor. Hub I2i projects beyond the other endof rotor I20, through and beyond a head I2 l screwed into the other endof casing H8 ofthe turbine. The end of hub I2I disposed outward beyondhead is exteriorly ,threaded'for reception of the neck of a hollowcoupling member 225 screwing onto hub I2 I. This coupling member isprovided with radially disposed outlet passages I28 of predeterminedsize, according to the characteristics of the liquid or paint used.Coupling member H6 'is bored and threaded from its other end forreception of the threaded stem W1 of a cylindrical brush I28 havingassociated therewith a guard member I29. Preferably, brush I28 comprisessections suitably connected for relative movementone away from theother, when the brush is rotated. The brush may be similar to thatdisclosed in the patent of Charles H. Stubbs, for Tube coating brush,No. 1,863,950, issued June 21, 1932. Brushes of this type are known inthe art and it is not thought necessary to illustrate or describe thebrush in greater detail. Hose H3 extends through the tubular hub- IZI ofair turbine H9 and opens into the hollow coupling member I25 fordelivering the coating liquid or paint thereto.

In Figure- 1 we have shown fragmentarily, and in section, a boiler tubeI30 to which is being applied a coating of paint or other protectiveliquid by a machine in accordance with our invention. The machine issuitably supported adjacent one end of the boiler and the air turbine H9and brush I28, and associated parts are inserted into tube I30 and movedtherethrough so as to position the brush I28 at the other end of thetube! During this operation, air hose H2 and the hose H3 are unwoundfrom reel 2 and are drawn through the tube I30, it being noted that atthis time reel 2 is declutched from the driving motor therefor and maybe rotated by pull exerted upon the hose I I2. During this rotation ofthe reel, shaft 24 is rotated and serves to move block 26 and guidemember 21 from the left endof the reel, as viewed in Figure 1, towardthe right end thereof. The operator then takes a.

position which will enable him to observe to best, 15

advantage the progress of thecoating'operation, this being permittedby'the provision of the cable 97 and associated parts. Preliminary toinitiation of the coating operation, the motor switch 93 is, of course,closed. This sets t e motor 6 in operation, but does not affect the reel2 so long as sprocket 9 remains declutched from clutch member H. Theoperator then actuates the control switches Hil, I02, thereby operatingthe electromagnetic valves 6! and 83, respectively, so that air issupplied under pressure to the turbine for rotating the brush and thecoating liquid or paint is supplied by hose i It to the coupling memberl 2t. Control switch 5 03 is then operated,thus energizing electromagnet28 and clutching sprocket ii to clutch member i 9. Since motor '6 is aconstant speed motor, the reel 2 is driven at a constant speed and thebrush I28, while being rotated by turbine l 59, is drawn through thetube I35, lengthwise thereof, at a predetermined uniform rate. Thecoating liquid or paint is supplied to the surface of the tube to becoated in advance of the brush I28 and is spread by the latter evenlyand uniformly over the tube surface. The size of the passages H26 ofcoupling member I25 is determined by the character of the paint orcoating liquid used, and this liquid is supplied to the coupling memberunder constant predetermined uniform pressure. It will also be observedthat the air for driving the turbine is supplied thereto underpredetermined uniform pressure so that the speed of rotation of thebrush I28, and the rate of its movement lengthwise of the tube, bothbear a definite relation to the amount of coating liquid supplied to thesurface of the tube and the rate at which this coating liquid issupplied. This assures that the coating liquid will 'be applied to thesurface of the tube so as to form thereon a uniform coating C of uniformthickness predetermined in accordance with the character of the coatingliquid used, the condition of the tube and the conditions of usethereof, etc. A further advantage is that it assures a perience hasdemonstrated that it is of vital importance in protecting tubesfromcorrosion and other injurious effects incident to use of the of thebrush, or by pro- As the turbine reaches the end of the tube adv jacentthe machine, the control switches maybe operated to stop the supply ofpaint or coating liquid first, to declutchmotor 6 from reel 2, and tocut off the supply to hose I I2 and stop the tur-. bine H9, in the ordernamed. This completes the coating operation and the tubes of the boilermay be coated successively in the manner above described. This coatingoperation may be performed by one man and is efiected at relatively highspeed, while having the advantage that it assures relative movementbetween the coating brush and the tube lengthwise of the latter atuniform speed, since the reel 2 is driven at uniform speed, and assuresthat the coating isapplied to the tube surface throughout the entirearea thereof and is of predetermined uniform thickness.

What We claim is:

1. In means for supplying coating liquid and operating pressure fluidonto and off of said reel comprising an outer flexible hose and an innerflexible hose, meansfor supplying fluid under pressure to said outerhose, and means for supplying liquid under pressure to said inner hose.

2. In means for supplying coating liquid and said reel and supply offluid and liquid to therespective hose.

3. In hose and reel means of the character described,

nected to the inner one of said radial passages- CERTIFICATE OFCORRECTION. Patent No. 2,191,728; February 27, 19b0,

THOMAS E. PURCELL, ET AL. I

It is hereby certified that error appears in the above numbered patentrequiring Correction as follows: In the heading to {the printedspecifica tion, line 6, and in the heading to the drawings, Sheets 1, 2and 5 filing date of original application, for "September 17', 1955",read ootober 16,- 1955; page 1,, first column, lines 1 2' and L5, forY'Maroh 28 1958 read March 22, 1958; and that the said Letters: Patentshould be read with this correction therein that the same may conform tothe record of the case in the Patent Office.

Signed and sealed this 2nd day of April, A D. l9L O.

Henry- Van Arsdale, I (Seal) Acting Cnxmniesioner of Patents.

